C8 waterproofing agent has better waterproof performance than C6, but why do you still choose C6 waterproofing agent?

Studies have found that the production of C8 by electrolysis is accompanied by a by-product called perfluorooctane sulfonic acid (PFOS)

Through research, people found that PFOS has:

  1. Persistence 2. Bioaccumulation 3. Toxicity-genetic toxicity, male reproductive toxicity, neurotoxicity, etc. 4. The ability of long-distance environmental migration

The new C6 will not produce PFOS and PFOA during production, and its performance is close to C8 after several years of careful research and development, and it is more environmentally friendly.